What is the subnet mask for the network 172.16.0.0/21?
A. 255.255.0.0
B. 255.255.255.240
C. 255.255.248.0
D. 255.255.255.248
E. 255.255.248.240
F. 255.255.255.0
What is the subnet mask for the network 172.16.0.0/21?
A. 255.255.0.0
B. 255.255.255.240
C. 255.255.248.0
D. 255.255.255.248
E. 255.255.248.240
F. 255.255.255.0